[Bug 13355] Richedit very slowly open big text files

http://bugs.winehq.org/show_bug.cgi?id=13355

--- Comment #12 from Alikas   2008-10-29 12:18:12 ---
Created an attachment (id=16968)
 --> (http://bugs.winehq.org/attachment.cgi?id=16968)
govorenie.exe source code

This code create richedit control, who not good work on Wine, but good work on
Windows XP:

LoadLibrary("Riched32.dll");                                 
///*
         LoadLibrary(TEXT("Msftedit.dll"));
         //*/
  hwndEdit= CreateWindowExW(0, L"RICHEDIT50W",NULL,
        ES_MULTILINE |ES_NOHIDESEL| WS_VISIBLE | WS_CHILD |  WS_TABSTOP|
WS_VSCROLL, 
        0, 0, 0, 0, 
        hwnd, NULL,    (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE), NULL);

This code open file and copy this file content to hwndEdit window:

if((HWND)lParam ==op) {
                                OPENFILENAME ofn;
                                char szFile[260];
                                ZeroMemory(&ofn, sizeof(ofn));
                                ofn.lStructSize = sizeof(ofn);
                                ofn.hwndOwner = hwnd;
                                ofn.lpstrFile = szFile;
                                ofn.lpstrFile[0] = '\0';
                                ofn.nMaxFile = sizeof(szFile);
                                ofn.lpstrFilter = "All\0*.*\0Text\0*.TXT\0";
                                ofn.nFilterIndex = 1;
                                ofn.lpstrFileTitle = NULL;
                                ofn.nMaxFileTitle = 0;
                                ofn.lpstrInitialDir = NULL;
                                ofn.Flags = OFN_PATHMUSTEXIST |
OFN_FILEMUSTEXIST;
                                if (GetOpenFileName(&ofn)==TRUE) {
                                        hFile = CreateFileA(ofn.lpstrFile,
GENERIC_READ, FILE_SHARE_READ, NULL,
                                                            OPEN_EXISTING, 0,
0);
                                        if(hFile != INVALID_HANDLE_VALUE)
                                        {
                                                DWORD dwFileSize;
                                                dwFileSize = GetFileSize(hFile,
NULL);
                                                if(dwFileSize != 0)
                                                {tk = (LPSTR)GlobalAlloc(GPTR,
dwFileSize + 1);
                                                        DWORD dwRead;
                                                        ReadFile(hFile,tk,
dwFileSize, &dwRead, NULL);
                                                        wtk=new
WCHAR[dwFileSize + 1];

MultiByteToWideChar(1251,0,tk,-1,wtk,dwFileSize + 1);

SetWindowTextW(hwndEdit,wtk);
        SendMessage(hwndEdit,EM_SETMODIFY,true,0);                              
        GlobalFree(tk);delete[] wtk;
                                                }
                                        }
                                        CloseHandle(hFile);
                                        SetCurrentDirectory(bdir);
                                }
                        }